HydroBASINS lev08 watershed · #7080015390

Bassin de Elwha River

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 2 administrative regions : Clallam, Jefferson

4% lakePfafstetter: 78310372

Sub-basin area

817,9km²

Upstream area

817,9km²

Discharge

40,19m³/s

Mean elev.

1 039m

Administrative coverage

2 dept-equivalent regions (GADM L2)

Clallam
Washington · United States
486.1 km²
59.3% of basin
Jefferson
Washington · United States
334.1 km²
40.7% of basin

14 intersecting protected areas

Olympic
IUCN II
National Park
724.29 km² overlap
Olympic National Park
IUCN V
Marine Protected Area
723.46 km² overlap
Olympic
IUCN Not Applicable
UNESCO-MAB Biosphere Reserve
717.36 km² overlap
Olympic National Park
IUCN Not Applicable
World Heritage Site (natural or mixed)
717.36 km² overlap
Daniel J. Evans
IUCN Ib
Wilderness Area
713.95 km² overlap
Little River Tenancy
IUCN Not Assigned
Conservation Easement
0.54 km² overlap
Dry Creek (Lydiard)
IUCN Not Assigned
Conservation Easement
0.46 km² overlap
Olympic-Willapa Hills-South Puget Sound
IUCN V
Wildlife Area Complex
0.36 km² overlap
Elwha Woods
IUCN Not Assigned
Conservation Easement
0.20 km² overlap

5 more protected areassorted by overlap area

Faunce-Hitt
IUCN V
Private Conservation
0.09 km² overlap
Twin Flower I
IUCN Not Assigned
Conservation Easement
0.06 km² overlap
Dry Creek Tree Farm
IUCN Not Assigned
Conservation Easement
0.06 km² overlap
Twin Flower II
IUCN Not Assigned
Conservation Easement
0.02 km² overlap
Twin Flower III
IUCN Not Assigned
Conservation Easement
0.02 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

2 873 distinct species · 67 273 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 41 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.

ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Elwha River : 26 espèces reliées par 89 interactions GloBI sur 4 types (connectance 10.9%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.108

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

5,2°C

Annual rain

2 319mm

Moisture idx (CMI)

0,70

Runoff

1 599mm/an

PET

652mm

AET

559mm

Mean slope

23,9°

Water table

750cm

Forest

90%

Crops

Urban

Protected

89%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)